A-frame

An A-frame is a basic structure designed to bear a load in a lightweight economical manner. The simplest form of an A-frame is two similarly sized beams, arranged in an angle of 45 degrees or less, attached at the top, like an uppercase letter 'A'. These materials are often wooden or steel beams attached at the top by rope, welding, gluing, or riveting.

This article is about the basic structure. For the building style, see A-frame building. For the equipment used in dog competitions, see Dog agility. For the musical group, see A Frames (band). For the JavaScript framework, see A-Frame (virtual reality framework).

A-frames can be used as-is, as part of shears, or set up in a row along a longitudinal beam for added stability, as in a saw horse. More complex structures will often have crossmembers connecting the A-frames at different angles, forming a truss.

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